In front of an audience they're pitch perfect, but behind the scenes of the Lazara string quartet, things aren't quite so adagio. Tapped to play at the White House after in-fighting broke them up, the group reunites, with a new member, a promising young student. As they prepare for the gig of their lives, tempers flare, relationships crumble and new ones bloom. Opus is a passionate, music-filled glimpse into the fascinating world of professional classical musicians.